Andy Murray showed his mettle to come from behind to beat Stanislas Wawrinka in the Marseille Open yesterday – but then received further criticism over his Davis Cup withdrawal.

The Scot, who recovered from a set down to reach the quarter-final, pulled out of last weekend’s Great Britain team beaten by Argentina in the world group tie in Buenos Aires, citing a recurring knee problem which could be aggravated by playing on clay.[>

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David Nalbandian, in the home team who completed a straightforward 4-1 success, believes Murray put himself before his country when pulling out.[>

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The Scot’s older brother and team-mate, Jamie, has already criticised his absence, arguing he could have played if had had a real desire to do so.[>

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Murray hit back, claiming that his sibling did not understand the demands placed on him.[>

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World No9 Nalbandian has now put his oar in over the issue, saying: “Murray did not want to come here, that’s all. Each player knows what to do. [>

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“He was not injured. His priority was not taking risks when playing on clay then immediately playing an indoor hardcourt tournament.”[>

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Murray insisted he was concerned about the effect switching surfaces would have on his knee.[>

In a repeat of the Qatar Open final, in which he also beat Swiss Wawrinka in three sets, Murray looked to be in trouble after an opening set and a half which featured nine breaks of service. [>

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However, he displayed an iron will to force his way back into the match, breaking his opponent three times in the final set to claim a 3-6, 7-6, 6-1 win in just over two hours and 20 minutes.[>

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“I felt fine at first but then I started to struggle to keep the ball in court,” said fourth seed Murray.[>

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“Everybody knows Stan can get nervous when a match gets tight. I know him well and he’s one of my best friends on the tour.”[>

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Murray, the world No11, will now face Frenchman Nicolas Mahut, ranked 44th, for a place in the semi-finals.[>